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Table 6 Values/distributions of major casemix variables for which adjustment is done by DHM-2008 per nth Admission for six hospitals.

From: Predicting hospital mortality among frequently readmitted patients: HSMR biased by readmission

  A A A A A A A A
  (n = 1) (n = 2) (n = 3) (n = 4) (n = 5,6) (n = 7-9) (n = 10-20) (n > 20)
Number of admissions 240662 75778 33902 18546 19124 12634 12483 5437
Patient specific casemix properties         
Average age at nth discharge (years) 61.2 64.7 65.5 65.5 64.8 63.7 62.4 59.0
Distribution of Charlson indices:         
0 68% 65% 60% 55% 49% 42% 37% 31%
1 20% 17% 16% 15% 13% 10% 6% 4%
2 and 3 10% 17% 22% 27% 35% 45% 54% 60%
4, 5 and 6 2% 2% 2% 3% 3% 3% 4% 5%
Distribution of Admissions per main diagnostic CCS group:         
Neoplasms 13% 20% 25% 31% 40% 52% 65% 72%
Metabolic & shock etc 4% 5% 6% 7% 8% 9% 12% 14%
Heart disease 40% 34% 29% 25% 20% 13% 7% 2%
Respiratory disease 11% 11% 12% 12% 11% 9% 6% 3%
Gastro-intestinal disease 13% 10% 9% 8% 6% 4% 3% 2%
Other 7 main CCS groups 21% 19% 19% 17% 15% 12% 8% 6%
Admission specific casemix properties         
Distribution of emergency admissions 43% 37% 39% 37% 34% 28% 18% 7%
Average length of stay (days) 6.8 7.2 7.0 6.5 6.0 5.0 3.4 1.8